<div class="dialog-title">更改用户名</div>
<div class="line-container">
    <input type="text" class="input-text setting-input" id="account-setting-username" placeholder="新用户名">
</div>
<div class="line-container">
    <div class="button button-theme-color setting-button" onclick="accountSetUsername()">应用</div>
</div>